Welcome to the new and improved Proflex / K2 Tech Forum!
You should use what the manufacturer recomends. You could try what you have but there may be clearance problems with the shifter or crank hitting the swingarm.I would take the gamble and use your 110 BB. If the shifting works, you could shave your cranks for more clearance and increase your Q factor with shims on the pedals. Does it work well now?Now class, what did I just say? (Did I do good Simon?)Terry
???Im planing on using a truvativ Isoflow crank which requires the powerspline B.B. that i believe only comes in 113mm lenghth, would that be ok